Unassigned Numbers (Text Announcement)New-CsAnnouncement -Parent service:ApplicationServer: -Name “Unassigned Numbers” -TextToSpeechPrompt “The Number you have dialed is not currently in use, please hold to be transferred to an operator.” -Language “en-US” -TargetUri sip:reception@ucsorted.com

MoH Policy to force company wide MoHSet-CSClientPolicy -EnableClientMusicOnHold:$TRUE -MusicOnHoldAudioFile pathtoaudiofile.wma
(keep in mind that this needs to be a path the clients can access to collect the music file)

Stop notification of being added as a contactset-CSClientPolicy – EnableNotificationForNewSubscribers $False
Changing the DG refresh interval from 8 days (default) to 5 minutesset-CSClientPolicy global -DGrefreshinterval:00:05:00